Spatio-Temporal Modeling and Device Optimization of Passively Mode-Locked Semiconductor Lasers

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Stefan Meinecke

Spatio-Temporal Modeling and Device Optimization of Passively Mode-Locked Semiconductor Lasers

Stefan Meinecke

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English

Springer Nature Switzerland AG
30 March 2023

Materials science; Semi-conductors & super-conductors; Laser technology & holography

Series: Springer Theses

This thesis investigates passively mode-locked semiconductor lasers by numerical methods. The understanding and optimization of such devices is crucial to the advancement of technologies such as optical data communication and dual comb spectroscopy. The focus of the thesis is therefore on the development of efficient numerical models, which are able both to perform larger parameter studies and to provide quantitative predictions. Along with that, visualization and evaluation techniques for the rich spatio-temporal laser dynamics are developed; these facilitate the physical interpretation of the observed features.

The investigations in this thesis revolve around two specific semiconductor devices, namely a monolithically integrated three-section tapered quantum-dot laser and a V-shaped external cavity laser. In both cases, the simulations closely tie in with experimental results, which have been obtained in collaboration with the TU Darmstadt and the ETH Zurich. Based on the successful numerical reproduction of the experimental findings, the emission dynamics of both lasers can be understood in terms of the cavity geometry and the active medium dynamics. The latter, in particular, highlights the value of the developed simulation tools, since the fast charge-carrier dynamics are generally not experimentally accessible during mode-locking operation. Lastly, the numerical models are used to perform laser design explorations and thus to derive recommendations for further optimizations.

By: Stefan Meinecke
Imprint: Springer Nature Switzerland AG
Country of Publication: Switzerland
Edition: 2022 ed.
Dimensions: Height: 235mm, Width: 155mm,
Weight: 421g
ISBN: 9783030962500
ISBN 10: 3030962504
Series: Springer Theses
Pages: 251
Publication Date: 30 March 2023
Audience: Professional and scholarly , Undergraduate
Format: Paperback
Publisher's Status: Active

Stefan Meinecke received his B.Sc in physics in 2014 from the Christian-Albrechts-Universtität zu Kiel and his M.Sc in 2016 from Freie Universität Berlin. He graduated and received the Dr. rer. nat. from the Technische Universtät Berlin in 2021. His scientific interests include nonlinear dynamics, laser physics, passively mode-locked semiconductor lasers, and the numerical simulation of optoelectronic devices. He has authored and co-authored twelve peer-reviewed scientific papers.